System for providing birth control

A process for preparing a reusable vaginal ring system for preventing pregnancy configured to release an approximate average of 0.15 mg/day of segesterone acetate and an approximate average of 0.013 mg/day of ethinyl estradiol for up to 13 cycles of 21 days each, the process comprising:

• a) adding an uncured addition-cure silicone elastomer having a platinum concentration of approximately 3 ppm to approximately 10 ppm and a hydride/vinyl ratio from approximately 1:1 to approximately 1.3:1 to a mold configured to provide a ring body comprising two channels adapted to receive first and second drug-containing cores;
• b) curing the uncured addition-cure silicone elastomer in the mold to provide a ring body comprising first and second channels adapted to receive first and second drug-containing cores;
• c) removing the ring body from the mold;
• and
• d) inserting the first drug-containing core into the first channel and inserting the second drug-containing core into the second channel, wherein the first and second drug-containing cores contain, in total, approximately 103 mg of segesterone acetate, and approximately 17.4 mg of ethinyl estradiol and wherein the first drug-containing core contains segesterone acetate and the second drug-containing core contains segesterone acetate and ethinyl estradiol.